CPAP machine and batteries

Early on I asked the DH if he knew he stopped breathing at night. Neither he nor I got a good night's sleep - him because of his frequent non-breathing episodes and me because I found myself staying awake to give him a nudge to start his breathing up again. He did the sleep test then he went to work and started comparing his numbers to others in the office who'd been tested. Like a typical man, the bigger the number the better - how often breathing stopped per hour, how long the lapse, how high a setting on the machine, ... But, as others have stated, no problem running off a battery as long as the humidifier isn't used.